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http://dx.doi.org/10.7316/KHNES.2022.33.5.515

Exergy Analysis and Heat Exchanger Network Synthesis for Improvement of a Hydrogen Production Process: Practical Application to On-Site Hydrogen Refueling Stations  

YUN, SEUNGGWAN (Department of Chemical Engineering, Konkuk University)
CHO, HYUNGTAE (Green Materials and Processes R&D Group, Korea Institute of International Technology)
KIM, MYUNGJUN (Office of Research Affairs/University Industry Foundation, Yonsei University)
LEE, JAEWON (Green Materials and Processes R&D Group, Korea Institute of International Technology)
KIM, JUNGHWAN (Green Materials and Processes R&D Group, Korea Institute of International Technology)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.33, no.5, 2022 , pp. 515-524 More about this Journal
Abstract
In this study, the on-site hydrogen production process for refueling stations that were not energy-optimized was improved through exergy analysis and heat exchange network synthesis. Furthermore, the process was scaled up from 30 Nm3/h to 150 Nm3/h to improve hydrogen production capacity. Exergy analysis results show that exergy destruction in the SMR reactor and the heat exchanger accounts for 58.1 and 19.8%, respectively. Thus, the process is improved by modifying the heat exchange network to reduce the exergy loss in these units. As a result of the process simulation analysis, thermal and exergy efficiency is improved from 75.7 to 78.6% and 68.1 to 70.4%, respectively. In conclusion, it is expected to improve the process efficiency when installing on-site hydrogen refueling stations.
Keywords
Hydrogen refueling station; Steam methane reforming; Exergy anlaysis; Heat exchanger network synthesis; Hydrogen production;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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